pimc2img

Converts color image to grayscale image.

Synopsis

pimc2img numband [-m mask] [im_in|-] [im_out|-]

Description

pimc2img creates a grayscale image im_out from one band of the input color image im_in. The type of the grayscale image is the same as the color image.

Parameters

numband is an integer from [0..2]:
- 0: the first band (for example the red band for RGB image, or the hue band for HSL image).
- 1: the second band (for example the green band for RGB image, or the saturation band for HSL image).
- 2: the third band (for example the blue band for RGB image, or the lightness band for HSL image).

Inputs

im_in: a color image.

Outputs

im_out: a grayscale image.

Examples

Extracts the first band of the parrot.pan color image:

   pimc2img 0 parrot.pan a.pn

Result

Returns SUCCESS or FAILURE.

C++ prototype

Errc PImc2Img( const Imc2duc &im_in, Img2duc &im_out, int noplan );

Version française

Construction d'une image de niveaux de gris avec un plan d'une image couleur.

Author: Régis Clouard